package com.gzone.contentprovider.helper;

import java.io.InputStream;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

import android.util.Log;

import com.gzone.contentprovider.utils.IOUtil;

// Code from: http://lukencode.com/2010/04/27/calling-web-services-in-android-using-httpclient/

public class RestClient {
	private ArrayList<NameValuePair> params;
	private ArrayList<NameValuePair> headers;

	private String url;
	RequestMethod defaltMethod = RequestMethod.POST;
	FormalOutput defaultOutputForm = FormalOutput.XML;
	private int responseCode;
	private String message;

	private String response;
	private List<Cookie> cookies;
	public byte[] responseByte;

	public String getResponse() {
		return response;
	}

	public String getErrorMessage() {
		return message;
	}

	public int getResponseCode() {
		return responseCode;
	}

	public List<Cookie> getCookies(){
		return cookies;
	}
	
	public RestClient(String url) {
		this.url = url;
		params = new ArrayList<NameValuePair>();
		headers = new ArrayList<NameValuePair>();
	}

	public void AddParam(String name, String value) {
		params.add(new BasicNameValuePair(name, value));
	}

	public void AddHeader(String name, String value) {
		headers.add(new BasicNameValuePair(name, value));
	}
	
	public void Execute() throws Exception {
		Execute(defaltMethod);
	}

	public void Execute(RequestMethod method) throws Exception {
		switch (method) {
		case GET: {
			// add parameters
			String combinedParams = "";
			if (!params.isEmpty()) {
				combinedParams += "?";
				for (NameValuePair p : params) {
					String paramString = p.getName() + "=" + URLEncoder.encode(p.getValue(), "UTF-8");
					if (combinedParams.length() > 1) {
						combinedParams += "&" + paramString;
					} else {
						combinedParams += paramString;
					}
				}
			}
			HttpGet request = new HttpGet(url + combinedParams);

			// add headers
			for (NameValuePair h : headers) {
				request.addHeader(h.getName(), h.getValue());
			}
			Log.i("ResClient", "--->" + url + combinedParams);

			executeRequest(request, url);
			break;
		}
		case POST: {
			HttpPost request = new HttpPost(url);

			// add headers
			for (NameValuePair h : headers) {
				request.addHeader(h.getName(), h.getValue());
			}

			if (!params.isEmpty()) {
				request.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
			}
			executeRequest(request, url);
			break;
		}
		}
	}

	private void executeRequest(HttpUriRequest request, String url) {
		DefaultHttpClient client = new DefaultHttpClient();

		HttpResponse httpResponse;

		try {
			httpResponse = client.execute(request);
			responseCode = httpResponse.getStatusLine().getStatusCode();
			message = httpResponse.getStatusLine().getReasonPhrase();
			
			HttpEntity entity = httpResponse.getEntity();

			cookies = client.getCookieStore().getCookies();
			
			if (entity != null) {

				InputStream instream = entity.getContent();
				responseByte = IOUtil.getStreamContentAsBytes(instream);
				response = new String(responseByte, "UTF-8");
				// Closing the input stream will trigger connection release
				instream.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		finally{
			client.getConnectionManager().shutdown();
		}
	}
}
